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authorLeah Rowe <info@minifree.org>2017-04-29 17:13:18 +0000
committerGogs <gogitservice@gmail.com>2017-04-29 17:13:18 +0000
commitee9449d8bdac8954278d34f5a150a87083f6a4c7 (patch)
tree5bbdd502b7a003cc357d4d25ba5da3e4370ac176 /docs/install
parentda31f31721864c8953558ba4e8e7a440e88ea861 (diff)
parentc9552f78f48c3a6f0108c7bb21ee6411458708af (diff)
downloadlibrebootfr-ee9449d8bdac8954278d34f5a150a87083f6a4c7.tar.gz
librebootfr-ee9449d8bdac8954278d34f5a150a87083f6a4c7.zip
Merge branch 'master' of swiftgeek/libreboot into master
Diffstat (limited to 'docs/install')
-rw-r--r--docs/install/bbb_setup.md18
-rw-r--r--docs/install/x200_external.md14
2 files changed, 4 insertions, 28 deletions
diff --git a/docs/install/bbb_setup.md b/docs/install/bbb_setup.md
index af9026b3..30e4adc7 100644
--- a/docs/install/bbb_setup.md
+++ b/docs/install/bbb_setup.md
@@ -327,24 +327,6 @@ leads, **but** keep all other leads short (10cm or less)
You should now have something that looks like this:\
![](images/x200/5252_bbb0.jpg) ![](images/x200/5252_bbb1.jpg)
-Notes about stability {#stability}
-=====================
-
-<http://flashrom.org/ISP> is what we typically do in libreboot, though
-not always. That page has some notes about using resistors to affect
-stability. Currently, we use spispeed=512 (512kHz) but it is possible to
-use higher speeds while maintaining stability.
-
-tty0\_ in \#libreboot was able to get better flashing speeds with the
-following configuration:
-
-- "coax" with 0.1 mm core and aluminum foley (from my kitchen), add
- 100 Ohm resistors (serial)
-- put heatshrink above the foley, for: CS, CLK, D0, D1
-- Twisted pair used as core (in case more capacitors are needed)
-- See this image: <http://i.imgur.com/qHGxKpj.jpg>
-- He was able to flash at 50MHz (lower speeds are also fine).
-
Copyright © 2014, 2015 Leah Rowe <info@minifree.org>\
Copyright © 2015 Patrick "P. J." McDermott <pj@pehjota.net>\
Copyright © 2015 Albin Söderqvist\
diff --git a/docs/install/x200_external.md b/docs/install/x200_external.md
index adcc473b..5f46c3d2 100644
--- a/docs/install/x200_external.md
+++ b/docs/install/x200_external.md
@@ -92,17 +92,11 @@ header), for SOIC-8 (clip: Pomona 5250):
chip on those pins?
**On the X200S and X200 Tablet the flash chip is underneath the board,
-in a WSON package. The pinout is very much the same as a SOIC-8, except
-you need to solder (there are no clips available).\
-The following image shows how this is done:**\
-![](images/x200/wson_soldered.jpg "Copyright 2014 Steve Shenton <sgsit@libreboot.org> see license notice at the end of this document")\
-In this image, a pin header was soldered onto the WSON. Another solution
-might be to de-solder the WSON-8 chip and put a SOIC-8 there instead.
+in a WSON package. The pinout is very much the same as a SOIC-8, but such package makes it impossible to use testclip.
+In order to enable external flashing of device, chip has to be changed to SOIC-8 one. Such procedure requires hot air station and soldering station (with "knife" K-Tip to easily solder SOIC-8).\
Check the list of SOIC-8 flash chips at
-[../hardware/gm45\_remove\_me.html\#flashchips](../hardware/gm45_remove_me.md#flashchips)
-but do note that these are only 4MiB (32Mb) chips. The only X200 SPI
-chips with 8MiB capacity are SOIC-16. For 8MiB capacity in this case,
-the X201 SOIC-8 flash chip (Macronix 25L6445E) might work.
+[List of supported flash chips](https://www.flashrom.org/Supported_hardware#Supported_flash_chips)\
+25XX series SPI NOR Flash in 8/16MiB sizes will work fine with libreboot.
The procedure
-------------